@article{DAN_1978_239_3_a17,
     author = {A. E. Oganyan},
     title = {The virial theorem and the spectral shift function for the {Dirac} operator},
     journal = {Doklady Akademii Nauk},
     pages = {569--572},
     publisher = {mathdoc},
     volume = {239},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_3_a17/}
}